兑水 发表于 2009-10-5 10:04:33

ASTM D 3380-1990 塑料基微波电路底板的相对介电常数(介电常...

D3380-90(2003) Standard Test Method for Relative Permittivity (Dielectric Constant) and Dissipation Factor of Polymer-Based Microwave Circuit Substrates
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